blakemah



ar as first No Drawing.

To all whom it may concern Be it known that I, WILLIAM N. BLAKE- MAN, Jr., a citizen of the United States, and resident of the city of Mount Vernon, in the county of VVestchester and State of New York, have invented a new and useful Improvement in Oils, which invention is fully set forth in the following specification.

The invention relates to the fatty oils, particularly the drying and semidrying, and its object is, while securing satisfactory drying properties, to increase these oils in volume and render them adaptable for use in all oil compounds and plastic compositions, with a marked increase in the permanency of the ultimate product. This I accomplish by incorporating with these fatty oils, a proportion of vegetable non-drying oil or fat having low melting and solidifying points, and a high resistance to hydroly sis, such as cocoanut oil or palnrlrernel oil. These substances, in this climate, pass through various changes in physical condition, from clear and flowing in summer,

to semi-solid or solid in cooler, or winter weather. (in account oi its abundance, I prefer to use cocoanut oil, but I consider palm-kernel oil to be its equivalent for my purpose. s a

The fatty oils which come within the eco nomical scope of my invention are linseed, perilla, tung, fish, menhaden, soya bean, cottonseed, sunflmver-seed and the like, and it will be found that the cocoanut oil is miscible with these oils in varying proportions, according to their specific gravity and interstitial capacity, by agitation, but heat may be used to accelerate the mixture. Aslittle as 5% of cocoanut oil will exhibit an appreciable efiect; but as high as or can be used in some cases, which mixture, when properly blended and spread on aplain surface will exhibit a pellicle after a few hours, especially in broad sunlight, and in a very much shorter time when accelerated by the usual quantity of a suitable liquid drier.

The most remarkable composition is that produced by combining cocoanut oil with tung oil. I have discovered that tung oil is a solvent, at common temperatures, for cocoanut oil in any of its phases, and when properly mixed and blended by agitation,

the mixture will not break, separate, or precipitate, but will remain clear even at tem peratures much below that at which cocoanut oil chills to a solid condition. This mixture can be used as abasalfactor, of great economical 1 eiiiciency, in many compositions, but its activity can be greatly accelerated by heating the mixture for a short timeto blend the oils and drive 05 any volatile matter, associated or suspended, a temperature of about 250 Fahr. being sufficient for this purpose. i

For general purposes 40% of cocoanut oil can be used with the tung oil, and will be found to be an all-round workable, factor. This proportion may be introduced and heated atone time, but when the cocoanut oil is added in successive, or cumulative,

Specification of Letters Patent. Patented J11; 1y 18, 192g Application filed. October 5, 1921. Serial natoaeee charges of 10% each, and the mixture heated after each charge, the cumulative effect is very marked, i I

This comblnation of cocoanut oil and tung oil, when spread on a-plain surface will indurateinto a film ofgreat brilliancy, and will prove a valuable factor in all oil-vehicles for paints or for varnish films. Not only may all the oils be used, by compounding, but all the variouspigments whether hydrated or anhydrous, as the cocoanut oil will be found to increase the spreading power of all pigments when groundin a vo hicle of which it forms a part. The ultimate paint product will also be found to be greatly resistant to the deteriorating cliect of atmospheric and abrasive influences, because of the high resistance to hydrolysis of the cocoanut 011.

The tendency of tung oil in drying toshrink and contort, as well as its tendency and that of some other oils, to polymerize and gelatinize when subjected to high temcombination with cocoanut oil. It will,of course, be understood that by peratures, will be very much modified by the the term oil, as used in this specification,

solid, or solid, condition at the time of use. Having thus fully described my invention,

The use of such non-drying vegetable oils I claim: 10 and fats in paint-vehicles is specifically 1. A mixture of tung oil; and avegetablc claimed in application No. 4:61961, filed by non-drying fatty oil having low melting and me on the 15th day of Api'il,l92l, and their solidifying points and a high resistance to use in pigment and paint compositions is hydrolysis. claimed in applications Nos. 505624: and 2. A mixture of tung oil and cocoanut oil. 15

505625 filed herewith. 7 WM. N. BLAKEMAN, JR. 

